Patrick Malenfant

Roles and responsibilities

Director of R&D

Current research and/or projects

Nanomaterials for high performance and printed electronics: conductive inks, SWCNT semiconductors, dielectrics, sensors, 3D printable materials

Research and/or project statements

  • High purity semiconducting single wall carbon nanotubes (sc-SWNT) for sensors and logic elements. Enabling roll to roll printing for large area displays and next generation high performance electronics.


  • Conductive inks for 2D/3D printing. Fabrication of stretchable, formable objects for in-mold electronics and 3D printed smart objects.


B.Sc (Hons. Coop) Chemistry, University of Ottawa, 1995

M.S. Chemistry, Cornell University, 1997

Ph.D. Chemistry, University of California – Berkeley, 2000

Professional activities/interests

Scientific Advisor for NSERC Strategic Network on Green Printed Electronic Materials (2018-)


Member of the American Chemical Society


  • NRC IP Achievement Award - Creation (Team award) - 2021
  • NRC IP Achievement Award - Advancement (Team award) - 2021
  • NRC Outstanding Achievement Award Technology to Market (Team award) – 2017
  • Co-inventor of a process for semiconducting SWCNT enrichment that was licensed and commercialized by Raymor/NanoIntegris.  The commercial product (IsoSol-S100) was awaded the best new materials development award at IDTechEx – PE USA (2014)
  • NRC Eminent Researcher Award Recipient (2010-2011)

Inventions and patents

20 granted and 20 pending patents encompassing nanomaterials for energy, healthcare and electronics. Active licenses for conductive inks and high purity semiconducting SWCNT.

Key publications

see Google Scholar Page for full listing of publications and patents:

Selected publications:


"UV-sinterable Silver Oxalate-Based Molecular Inks and Their Application for In-Mold Electronics"  X Liu, D Li, H Fukutani, P Trudeau, LÏ Khoun, O Mozenson, KL Sampsonet al. Advanced Electronic Materials 7 (9), 2100194


"Boron Nitride Nanotube Coatings for Thermal Management of Printed Silver Inks on Temperature Sensitive Substrates" Wagner, K.; Paquet, C.; Martinez-Rubi, Y.; Genest, M.; Guan, J.; Sampson, K. L.; Kim, K. S.; Kell, A. J.; Malenfant, P. R. L.; Lessard. B. H. Adv. Electronic Mater. 2021, 7 (5), 2001035


"Direct Printing of Functional 3D Objects Using Polymerization-Induced Phase Separation" Deore, B.; Sampson, K. L.; Lacelle, T.; Kredentser, N.; Lefebvre, J.; Young, L. S.; Hyland, J.; Amaya, R. E.; Jamshid, T.A.; Malenfant, P. R. L.; de Haan Hendrick W.; Paquet. C.; Nat. Commun. 2021, 12, 1-12.


"Phenanthroline Additives for Enhanced Semiconducting Carbon Nanotube Dispersion Stability and Transistor Performance" Schneider, S.; Lefebvre, J.; Diercks, N. J.; Berger, F.J.; Lapointe, F.; Schleicher, J.; Malenfant, P. R. L.; Zaumseil, J. ACS Appl. Nano Mater. 2020, 3, 12314–12324.


"Near-Infrared-II Photodetectors Based on Silver Selenide Quantum Dots on Mesoporous TiO2 Scaffolds" Graddage, N.; Ouyang, J.; Lu, J.; Chu, T.-Y.; Zhang, Y.; Li, Z.; Wu, X.; Malenfant, P. R. L.; Tao. Ye. ACS Appl. Nano Mater. 2020, 3, 12209–12217.


"Mechanistic Insight into Bis (amino) Copper Formate Thermochemistry for Conductive Molecular Ink Design" H Shin, X Liu, T Lacelle, RJ MacDonell, MS Schuurman, PRL Malenfant, et al. ACS Applied Materials & Interfaces 2020, 12, 33039-33049.


"Enrichment of semiconducting single walled carbon nanotubes with indigo-fluorene-based copolymers and their use in printed thin film transistors and carbon dioxide gas sensors" C Guo, J Ouyang, H Shin, J Ding, Z Li, F Lapointe, J Lefebvre, A Kell et al. ACS Sensors, 2020, 5, 2136–2145.


"Fully R2R‐Printed Carbon‐Nanotube‐Based Limitless Length of Flexible Active‐Matrix for Electrophoretic Display Application" J Sun, A Sapkota, H Park, P Wesley, Y Jung, BB Maskey, Y Kim, Y Majima, et al. Advanced Electronic Materials, 2020, 6, 1901431.


"Formulation of Screen-Printable Cu Molecular Ink for Conductive/Flexible/Solderable Cu Traces" B Deore, C Paquet, AJ Kell, T Lacelle, X Liu, O Mozenson, G Lopinski, et al. ACS Applied Materials & Interfaces 2019, 11, 38880-38894.


"Probing Ca 2+-induced conformational change of calmodulin with gold nanoparticle-decorated single-walled carbon nanotube field-effect transistors" W Shao, et al., Nanoscale 2019, 11, 13397-13406.


“The role of amine ligands in governing film morphology and electrical properties of copper films derived from copper formate-based molecular inks” by Paquet, C.;  Lacelle, T.;  Liu, X.;  Deore, B.;  Kell, A.J.;  Lafrenière, S.; Malenfant, P.R.L. Nanoscale 2018, 10, 6911-6921


“Sorting of Semiconducting Single-Walled Carbon Nanotube in Polar Solvents with an Amphiphilic Conjugated Polymer Provides General Guidelines for Enrichment” by Ouyang, J.; Ding, J.; Lefebvre, J.; Li, Z.; Guo, C.; Kell, A.J.; Malenfant, P.R.L. ACS Nano, 2018, 12, 1910-1919.


“Decomposable s-Tetrazine Copolymer Enables Single-Walled Carbon Nanotube Thin Film Transistors and Sensors with Improved Sensitivity” by Li, Z.; Ding, J.; Guo, C.; Lefebvre, J.; Malenfant, P.R.L. Adv. Funct. Mater. 2018, 1705568.


“High purity semiconducting single-walled carbon nanotubes: Enrichment, metrology and electronics” Lefebvre, J.; Ding, J.; Li, Z.; Finnie, P.; Lopinski, G.P.; Malenfant, P.R.L.;  Acc. Chem. Res. 2017, 2479-2486.


“A Versatile Molecular Silver Ink Platform for Printed Flexible Electronics” by Kell, A.J.; Paquet, C.; Mozenson, O.; Djavani-Tabrizi, I.; Deore, B.; Liu, X; Lopinski, G.P.; James, R.; Hettak, K.; Shaker, J.; Momciu, A.; Ferrigno, J.; Ferrand, O.; Hu, J.; Lafrenière, S.; Malenfant, P.R L. ACS Applied Materials and Interfaces,  2017, 9, 17226–17237.


“Fully Printed and Encapsulated SWCNT-based Thin Film Transistors via a Combination of R2R Gravure and Inkjet Printing” by Homenick, C.M.; James, R.; Lopinski, G.P.; Dunford, J.; Sun J.; Park, H.; Jung, Y.; Cho, G.; Malenfant, P.R.L. ACS Applied Materials and Interfaces, 2016, 8, 27900-27910.


“A hybrid enrichment process combining conjugated polymer extraction and silica gel adsorption for high purity semiconducting single-walled carbon nanotubes (SWCNT)” Ding, J.; Li, Z.; Lefebvre, J.; Cheng, F.; Dunford, J.L.; Malenfant, P.R.L.; Humes, J.; Kroeger, J. Nanoscale 2015, 7, 15741-15747.


“Enrichment of large-diameter semiconducting SWCNTs by polyfluorene extraction for high network density thin film transistors” Ding, J.;  Li, Z.; Lefebvre, J.; Cheng, F.; Dubey, G.;  Zou, S.; Finnie, P.; Hrdina, .A.; Scoles, L.; Lopinski, L.P.; Kingston, C.T.; Simard, B.; Malenfant, P. R.L. Nanoscale, 2014, 6 , 2328-2339.

Previous work experience

July, 2000 — July, 2001

IBM T.J. Watson Research Center (Yorktown Heights, NY)

Postdoctoral Associate

  • Synthesis of new organic semiconductors for thin film transistors
    July, 2001 — Dec, 2009
    GE Global Research Center (Niskayuna, NY)
    Senior Researcher – Project Leader
  • Purification of Semiconducting Single Walled Carbon Nanotubes (sc-SWCNT)
  • Synthesis of nanoceramics via block copolymer self-assembly
  • Synthesis of nanoparticle based MRI contrast agents

Synthesis of membranes for bioprocessing

Patrick Malenfant

Patrick Malenfant

Director, Research and Development
Quantum and Nanotechnologies
1200 Montreal Road
Ottawa, Ontario K1A 0R6
Preferred language: English
Telephone: 613-990-0705

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Polymers, Materials